Dow futures were down 0.4 percent at 17,459 and S&P 500 futures dropped 0.5 percent to 2,006.10, auguring a rocky start for Wall Street following erratic trading the day before, AP reported.

Energy: Oil fell again after the UAE energy minister said OPEC has no plans to curb production to shore up prices that have slumped almost 60 percent since June. US crude was down 73 cents to $45.16 a barrel in electronic trading on the New York Mercantile Exchange. It lost 18 cents to close at $45.89 a barrel on Tuesday. Brent crude, a benchmark for international oils, fell 82 cents to $47.00 in London. Some of the fall in crude reflects oversupply but analysts say a weak global economy is also a factor.

Copper: The price of copper, a metal used in many industries that is also a barometer of global economic demand, plunged for a second day, adding to jitters from the slump in oil prices.

Copper on CME Group’s COMEX market was down 6.4 percent at $247.60 a pound. Copper on the LME’s cash market fell 3.5 percent a ton on Wednesday.

“Weaker leads from Wall Street, continued capitulation of oil and iron ore prices, along with a dramatic plunge in copper overnight, spells risk-off,” said CMC Markets sales trader Will Leys in a commentary.

“In short, this is the theme being played out today. Copper is often viewed as a bellwether for economic growth, so its decline has added to the existing unease.”

Currencies: The dollar fell to 116.80 yen from its previous close of 117.61 yen. The euro rose to $1.1796 from $1.1781.

Europe: European stocks fell from a five-week high as energy and mining shares followed commodity prices lower on global-growth concern. The Stoxx Europe 600 Index dropped 1 percent to 341.5 at 12:33 p.m. in London.